Consolidated Statements Of Condition (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Jun. 30, 2013 Series A Preferred Stock [Member]	Dec. 31, 2012 Series A Preferred Stock [Member]	Jun. 30, 2012 Series A Preferred Stock [Member]	Jun. 30, 2013 Series C Preferred Stock [Member]	Dec. 31, 2012 Series C Preferred Stock [Member]	Jun. 30, 2012 Series C Preferred Stock [Member]
Interest-bearing deposits with other banks, restricted for securitization investors	$ 0	$ 0	$ 658,983
Net loans - restricted for securitization investors	$ 0	$ 0	$ 29,840
Preferred stock, par value
Preferred stock, shares authorized	20,000,000	20,000,000	20,000,000
Preferred stock, liquidation value per share				$ 1,000	$ 1,000	$ 1,000	$ 1,000	$ 1,000	$ 1,000
Preferred stock, shares issued				50,000	50,000	50,000	126,500	126,500	126,500
Preferred stock, shares outstanding				50,000	50,000	50,000	126,500	126,500	126,500
Common stock, par value
Common stock, stated value	$ 1.00	$ 1.00	$ 1.00
Common stock, shares authorized	100,000,000	100,000,000	100,000,000
Common stock, shares issued	37,984,485	37,107,684	36,573,468
Treasury stock, shares	259,342	249,329	236,226